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Edit this profileWhere to find William S. Lewis, MD
- Los Gatos location main office
15861 Winchester Blvd, Los Gatos, CA 95030 - Stanford location
300 Pasteur Dr, Stanford, CA 94305
About Dr. Lewis
William S. Lewis, MD practices otolaryngology (ent) in Los Gatos, CA. William is a 1986 graduate of University of Southern California Keck School of Medicine. Medicare claims data shows William provided 1,751 services to 1,424 patients. The services billed most often include removal of impacted ear wax, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1871585059.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (408) 395-6121
- Email not available
Practice Locations
15861 WINCHESTER BLVD
Los Gatos, CA 95030
300 Pasteur Dr
Stanford, CA 94305
Conditions Commonly Evaluated or Treated
Within Otolaryngology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Cancer
- Nasopharyngeal cancer
- Oropharyngeal cancer
- Sinonasal cancer
- Laryngeal cancer
- Oral cavity cancer
- Skin cancer of the head and neck
Pediatric and congenital
- Congenital neck mass
Most searched conditions
Balance
Ear and hearing
- Cholesteatoma
- Eustachian tube dysfunction
- Hearing loss
- Otosclerosis
- Perforated eardrum
- Swimmer's ear
Head, neck, and salivary
Nose and sinus
- Broken nose
- Deviated septum
- Loss or reduction of smell
- Nasal obstruction
- Nasal polyps
- Nosebleeds
- Seasonal allergies
Sleep and airway
Throat and voice
- Enlarged adenoids
- Globus sensation
- Hoarseness and voice change
- Laryngopharyngeal reflux
- Swallowing difficulties
- Vocal cord nodules
- Vocal cord paralysis
Head & Neck
Throat & Voice
- Frequent Strep Throat
Procedures & services
Cosmetic
- Earlobe Repair
Ear & Hearing
- Bone-Anchored Hearing Aid Surgery
- Eustachian Tube Balloon Dilation
Ear procedures
- Bone-anchored hearing-device placement
- Cochlear implant surgery
- Ear-tube placement
- Eardrum repair
- Mastoid surgery
- Stapes surgery
- Earwax removal
Endocrine Surgery
Facial plastic and reconstructive
- Facial reconstructive surgery
Head & Neck
- Neck Lump Removal
- Salivary Duct Stone Removal
- Thyroid Nodule Biopsy
Head and neck surgery
- Parathyroid surgery
- Submandibular gland removal
- Thyroid removal surgery
- Transoral robotic surgery
- Voice-box removal
- Neck lymph-node dissection
- Parotid gland surgery
Nose & Sinus
- Broken Nose Repair
Nose and sinus procedures
- Balloon sinus dilation
- Endoscopic sinus surgery
- Nasal cautery for nosebleeds
- Nasal-polyp removal
- Reduction of a broken nose
- Septoplasty
- Turbinate reduction
- Rhinoplasty
Office diagnosis
- Balance and vestibular testing
- ENT consultation
- Fine-needle aspiration of a neck mass
- Flexible laryngoscopy
- Hearing test
- Nasal endoscopy
- Rigid laryngoscopy
Throat, voice, and swallowing
- Esophageal dilation
- Instrumental swallowing evaluation
- Microlaryngoscopy
- Vocal-fold injection
Most searched procedures
- Adenoidectomy
- Ear tube surgery
- Hearing test
- Sinus surgery
- Tonsillectomy
Sleep and airway
- Drug-induced sleep endoscopy
- Hypoglossal nerve stimulator implantation
- Uvulopalatopharyngoplasty
Throat & Voice
Procedures Most Often Billed to Medicare
1,751 services · 1,424 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
537 | More than most peers in Otolaryngology (ENT) |
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
96 | More often than most peers in Otolaryngology (ENT) |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
58 | As often as other peers in Otolaryngology (ENT) |
| Simple control of nose bleed | Procedure | 30901 |
19 | As often as other peers in Otolaryngology (ENT) |
| Exam of ear using a microscope | Treatment | 92504 |
44 | As often as other peers in Otolaryngology (ENT) |
| Repositioning exercises of head for treatment of dizziness, each day | Treatment | 95992 |
32 | More often than most peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
344 | More often than most peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
266 | More often than most peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
158 | More than most peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
85 | More often than most peers in Otolaryngology (ENT) |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other otolaryngology specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 25 related providers in 4 groups
Other otolaryngology specialists in Los Gatos 2
Same specialty, same city.
Trained at University of Southern California Keck School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at University of Southern California Keck School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of impacted ear wax 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Lewis specialize in?
Dr. Lewis is an otolaryngology (ent) in Los Gatos, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Lewis located?
Dr. Lewis is listed at 15861 Winchester Blvd, Los Gatos, CA 95030. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Lewis's phone number?
The number on file is (408) 395-6121. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Lewis?
Dr. Lewis's National Provider Identifier is 1871585059. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Lewis go to medical school?
Dr. Lewis attended University of Southern California Keck School of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Lewis have?
Dr. Lewis has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Lewis do most often?
According to Medicare billing data, Dr. Lewis performs procedures including removal of impacted ear wax, diagnostic exam of voice box using a flexible endoscope and diagnostic exam of nasal passages using an endoscope; provides treatments such as exam of ear using a microscope and repositioning exercises of head for treatment of dizziness, each day, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Lewis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lewis. If this is you, claiming it is free.
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